My buddy's 06 F4i isn't working properly. When the key is turned on the fuel pump does not prime. We bypassed the tip-over switch, so that is not the issue. All of the fuses are good and tried switching around the two relays on the right side of the subframe around and that didn't work either. I put a test light to the fuel pump to see if it is getting power, it is but just barely enough to light up my test light. Is this because the ecu only puts out so much power? We tried jumping the fuel pump but were also unsuccessful. So, I know the fuel pump is getting some power. Any other ideas?